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erickeller/gist:b7062ab7eaa5145bea46409f5367e63c

Created April 26, 2017 13:43
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wait for 30 sec continue directry if any keyboard key is pressed
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gistfile1.txt
for i in `seq 30`; do sleep 1; echo -n .; read -r -s -t 0.5; RETVAL=$?; [ $RETVAL -eq 0 ] && break ; done
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